One of the most powerful tools to emerge is CRISPR, which, using an amalgam of technologies, allows scientists, with great speed and precision, to edit— even rewrite— genetic codes in a broad array of organisms. Clearly the potential for good is extraordinary— accelerating the cures for diseases such as cancer, heart disease, diabetes, Alzheimer’s, and numerous others. However, the ability to splice genes and make selective changes to otherwise healthy organisms to “improve” them raises an equal or greater number of concerns on practical, philosophical, and ethical grounds. Unlike integrating hardware and software into the human body, which disappears upon the death of the individual, the change of genetic sequencing can be passed from generation to generation and is, therefore, permanent.
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